add gpio udev rule

Author: mat83

recipes-core/udev/udev-rules-portenta/90-arduino-devices.rules

@@ -27,6 +27,9 @@ SUBSYSTEM=="tty", KERNEL=="ttymxc3", SYMLINK+="arduino/uart3"
 SUBSYSTEM=="spidev", KERNEL=="spidev0.0", SYMLINK+="arduino/spi0"
 SUBSYSTEM=="spidev", KERNEL=="spidev1.0", SYMLINK+="arduino/spi1"
 
+# Gpio
+SUBSYSTEM=="gpio", KERNEL=="gpiochip5", SYMLINK+="arduino/gpio"
+
 # Storage
 SUBSYSTEM=="block", KERNEL=="mmcblk2", SYMLINK+="arduino/mmc"
 SUBSYSTEM=="block", KERNEL=="mmcblk2p[1-9]", SYMLINK+="arduino/mmc%n"